Feature Tip: Add private address tag to any address under My Name Tag !
Overview
Max Total Supply
1,455.591788158153723025 SY-sfrxETH
Holders
22 (0.00%)
Total Transfers
-
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
PendleSfrxEthSY
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 1000000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "../SYBase.sol"; import "../../../interfaces/Frax/IFrxEthMinter.sol"; import "../../../interfaces/IERC4626.sol"; /// @dev deposit through weth is not neccessary to be done on this contract's level /// as we already supported this with our router contract PendleSfrxEthSY is SYBase { address public immutable minter; address public immutable frxETH; address public immutable sfrxETH; constructor( string memory _name, string memory _symbol, address _minter ) SYBase(_name, _symbol, IFrxEthMinter(_minter).sfrxETHToken()) { minter = _minter; sfrxETH = IFrxEthMinter(minter).sfrxETHToken(); frxETH = IFrxEthMinter(minter).frxETHToken(); _safeApproveInf(frxETH, sfrxETH); } /*/////////////////////////////////////////////////////////////// DEPOSIT/REDEEM USING BASE TOKENS //////////////////////////////////////////////////////////////*/ /** * The underlying yield token is frxETH. If the base token deposited is ETH, the function * deposits through fraxMinterContract - the most efficient way to get frxETH and deposit * directly to sfrxETH. */ function _deposit( address tokenIn, uint256 amountDeposited ) internal virtual override returns (uint256 /*amountSharesOut*/) { if (tokenIn == NATIVE) { return IFrxEthMinter(minter).submitAndDeposit{ value: amountDeposited }(address(this)); } else if (tokenIn == frxETH) { return IERC4626(sfrxETH).deposit(amountDeposited, address(this)); } else { return amountDeposited; } } /** * Withdrawal to sfrxETH and frxETH is done normally as other ERC4626. * Withdrawal to ETH is on the other hand not possible */ function _redeem( address receiver, address tokenOut, uint256 amountSharesToRedeem ) internal virtual override returns (uint256 /*amountTokenOut*/) { if (tokenOut == sfrxETH) { _transferOut(sfrxETH, receiver, amountSharesToRedeem); return amountSharesToRedeem; } else { return IERC4626(sfrxETH).redeem(amountSharesToRedeem, receiver, address(this)); } } /*/////////////////////////////////////////////////////////////// EXCHANGE-RATE //////////////////////////////////////////////////////////////*/ /** * @notice Calculates and updates the exchange rate of shares to underlying asset token * @dev It is the exchange rate of sfrxETH to frxETH */ function exchangeRate() public view virtual override returns (uint256) { return IERC4626(sfrxETH).convertToAssets(1 ether); } /*/////////////////////////////////////////////////////////////// MISC FUNCTIONS FOR METADATA //////////////////////////////////////////////////////////////*/ function _previewDeposit( address tokenIn, uint256 amountTokenToDeposit ) internal view override returns (uint256 /*amountSharesOut*/) { if (tokenIn == sfrxETH) { return amountTokenToDeposit; } else { return IERC4626(sfrxETH).previewDeposit(amountTokenToDeposit); } } function _previewRedeem( address tokenOut, uint256 amountSharesToRedeem ) internal view override returns (uint256 /*amountTokenOut*/) { if (tokenOut == sfrxETH) { return amountSharesToRedeem; } else { return IERC4626(sfrxETH).convertToAssets(amountSharesToRedeem); } } function getTokensIn() public view virtual override returns (address[] memory res) { res = new address[](3); res[0] = frxETH; res[1] = sfrxETH; res[2] = NATIVE; } function getTokensOut() public view virtual override returns (address[] memory res) { res = new address[](2); res[0] = frxETH; res[1] = sfrxETH; } function isValidTokenIn(address token) public view virtual override returns (bool) { return token == frxETH || token == sfrxETH || token == NATIVE; } function isValidTokenOut(address token) public view virtual override returns (bool) { return token == frxETH || token == sfrxETH; } function assetInfo() external view returns (AssetType assetType, address assetAddress, uint8 assetDecimals) { return (AssetType.TOKEN, frxETH, 18); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ``` * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original * initialization step. This is essential to configure modules that are added through upgrades and that require * initialization. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized < type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { require(!paused(), "Pausable: paused"); } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { require(paused(), "Pausable: not paused"); } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/extensions/draft-ERC20Permit.sol) pragma solidity ^0.8.0; import "./draft-IERC20Permit.sol"; import "../ERC20.sol"; import "../../../utils/cryptography/draft-EIP712.sol"; import "../../../utils/cryptography/ECDSA.sol"; import "../../../utils/Counters.sol"; /** * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. * * _Available since v3.4._ */ abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 { using Counters for Counters.Counter; mapping(address => Counters.Counter) private _nonces; // solhint-disable-next-line var-name-mixedcase bytes32 private constant _PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); /** * @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`. * However, to ensure consistency with the upgradeable transpiler, we will continue * to reserve a slot. * @custom:oz-renamed-from _PERMIT_TYPEHASH */ // solhint-disable-next-line var-name-mixedcase bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT; /** * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`. * * It's a good idea to use the same `name` that is defined as the ERC20 token name. */ constructor(string memory name) EIP712(name, "1") {} /** * @dev See {IERC20Permit-permit}. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual override { require(block.timestamp <= deadline, "ERC20Permit: expired deadline"); bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline)); bytes32 hash = _hashTypedDataV4(structHash); address signer = ECDSA.recover(hash, v, r, s); require(signer == owner, "ERC20Permit: invalid signature"); _approve(owner, spender, value); } /** * @dev See {IERC20Permit-nonces}. */ function nonces(address owner) public view virtual override returns (uint256) { return _nonces[owner].current(); } /** * @dev See {IERC20Permit-DOMAIN_SEPARATOR}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view override returns (bytes32) { return _domainSeparatorV4(); } /** * @dev "Consume a nonce": return the current value and increment. * * _Available since v4.1._ */ function _useNonce(address owner) internal virtual returns (uint256 current) { Counters.Counter storage nonce = _nonces[owner]; current = nonce.current(); nonce.increment(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Counters.sol) pragma solidity ^0.8.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` */ library Counters { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol) pragma solidity ^0.8.0; import "./ECDSA.sol"; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ */ abstract contract EIP712 { /* solhint-disable var-name-mixedcase */ // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; address private immutable _CACHED_THIS; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; /* solhint-enable var-name-mixedcase */ /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = block.chainid; _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _CACHED_THIS = address(this); _TYPE_HASH = typeHash; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator( bytes32 typeHash, bytes32 nameHash, bytes32 versionHash ) private view returns (bytes32) { return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this))); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: GPL-3.0-or-later // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import "@openzeppelin/contracts/utils/Context.sol"; /** * @dev Pendle's ERC20 implementation, modified from @openzeppelin implementation * Changes are: * - comes with built-in reentrancy protection, storage-packed with totalSupply variable * - delete increaseAllowance / decreaseAllowance * - add nonReentrancy protection to transfer / transferFrom functions * - allow decimals to be passed in * - block self-transfer by default */ // solhint-disable contract PendleERC20 is Context, IERC20, IERC20Metadata { uint8 private constant _NOT_ENTERED = 1; uint8 private constant _ENTERED = 2; mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint248 private _totalSupply; uint8 private _status; string private _name; string private _symbol; uint8 public immutable decimals; /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Sets the values for {name}, {symbol} and {decimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_, uint8 decimals_) { _name = name_; _symbol = symbol_; decimals = decimals_; _status = _NOT_ENTERED; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer( address to, uint256 amount ) external virtual override nonReentrant returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance( address owner, address spender ) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) external virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) external virtual override nonReentrant returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer(address from, address to, uint256 amount) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(from != to, "ERC20: transfer to self"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += toUint248(amount); _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= toUint248(amount); emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance(address owner, address spender, uint256 amount) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {} function toUint248(uint256 x) internal virtual returns (uint248) { require(x <= type(uint248).max); // signed, lim = bit-1 return uint248(x); } }
// SPDX-License-Identifier: GPL-3.0-or-later // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./PendleERC20.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import "@openzeppelin/contracts/utils/Context.sol"; import "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol"; import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol"; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/utils/Counters.sol"; /// @dev forked from OZ's ERC20Permit contract PendleERC20Permit is PendleERC20, IERC20Permit, EIP712 { using Counters for Counters.Counter; mapping(address => Counters.Counter) private _nonces; // solhint-disable-next-line var-name-mixedcase bytes32 private constant _PERMIT_TYPEHASH = keccak256( "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)" ); constructor( string memory name_, string memory symbol_, uint8 decimals_ ) PendleERC20(name_, symbol_, decimals_) EIP712(name_, "1") {} /** * @dev See {IERC20Permit-permit}. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual override { require(block.timestamp <= deadline, "ERC20Permit: expired deadline"); bytes32 structHash = keccak256( abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline) ); bytes32 hash = _hashTypedDataV4(structHash); address signer = ECDSA.recover(hash, v, r, s); require(signer == owner, "ERC20Permit: invalid signature"); _approve(owner, spender, value); } /** * @dev See {IERC20Permit-nonces}. */ function nonces(address owner) public view virtual override returns (uint256) { return _nonces[owner].current(); } /** * @dev See {IERC20Permit-DOMAIN_SEPARATOR}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view override returns (bytes32) { return _domainSeparatorV4(); } /** * @dev "Consume a nonce": return the current value and increment. * * _Available since v4.1._ */ function _useNonce(address owner) internal virtual returns (uint256 current) { Counters.Counter storage nonce = _nonces[owner]; current = nonce.current(); nonce.increment(); } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; contract BoringOwnableUpgradeableData { address public owner; address public pendingOwner; } abstract contract BoringOwnableUpgradeable is BoringOwnableUpgradeableData, Initializable { event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); function __BoringOwnable_init() internal onlyInitializing { owner = msg.sender; } /// @notice Transfers ownership to `newOwner`. Either directly or claimable by the new pending owner. /// Can only be invoked by the current `owner`. /// @param newOwner Address of the new owner. /// @param direct True if `newOwner` should be set immediately. False if `newOwner` needs to use `claimOwnership`. /// @param renounce Allows the `newOwner` to be `address(0)` if `direct` and `renounce` is True. Has no effect otherwise. function transferOwnership(address newOwner, bool direct, bool renounce) public onlyOwner { if (direct) { // Checks require(newOwner != address(0) || renounce, "Ownable: zero address"); // Effects emit OwnershipTransferred(owner, newOwner); owner = newOwner; pendingOwner = address(0); } else { // Effects pendingOwner = newOwner; } } /// @notice Needs to be called by `pendingOwner` to claim ownership. function claimOwnership() public { address _pendingOwner = pendingOwner; // Checks require(msg.sender == _pendingOwner, "Ownable: caller != pending owner"); // Effects emit OwnershipTransferred(owner, _pendingOwner); owner = _pendingOwner; pendingOwner = address(0); } /// @notice Only allows the `owner` to execute the function. modifier onlyOwner() { require(msg.sender == owner, "Ownable: caller is not the owner"); _; } uint256[48] private __gap; }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; library Errors { // BulkSeller error BulkInsufficientSyForTrade(uint256 currentAmount, uint256 requiredAmount); error BulkInsufficientTokenForTrade(uint256 currentAmount, uint256 requiredAmount); error BulkInSufficientSyOut(uint256 actualSyOut, uint256 requiredSyOut); error BulkInSufficientTokenOut(uint256 actualTokenOut, uint256 requiredTokenOut); error BulkInsufficientSyReceived(uint256 actualBalance, uint256 requiredBalance); error BulkNotMaintainer(); error BulkNotAdmin(); error BulkSellerAlreadyExisted(address token, address SY, address bulk); error BulkSellerInvalidToken(address token, address SY); error BulkBadRateTokenToSy(uint256 actualRate, uint256 currentRate, uint256 eps); error BulkBadRateSyToToken(uint256 actualRate, uint256 currentRate, uint256 eps); // APPROX error ApproxFail(); error ApproxParamsInvalid(uint256 guessMin, uint256 guessMax, uint256 eps); error ApproxBinarySearchInputInvalid( uint256 approxGuessMin, uint256 approxGuessMax, uint256 minGuessMin, uint256 maxGuessMax ); // MARKET + MARKET MATH CORE error MarketExpired(); error MarketZeroAmountsInput(); error MarketZeroAmountsOutput(); error MarketZeroLnImpliedRate(); error MarketInsufficientPtForTrade(int256 currentAmount, int256 requiredAmount); error MarketInsufficientPtReceived(uint256 actualBalance, uint256 requiredBalance); error MarketInsufficientSyReceived(uint256 actualBalance, uint256 requiredBalance); error MarketZeroTotalPtOrTotalAsset(int256 totalPt, int256 totalAsset); error MarketExchangeRateBelowOne(int256 exchangeRate); error MarketProportionMustNotEqualOne(); error MarketRateScalarBelowZero(int256 rateScalar); error MarketScalarRootBelowZero(int256 scalarRoot); error MarketProportionTooHigh(int256 proportion, int256 maxProportion); error OracleUninitialized(); error OracleTargetTooOld(uint32 target, uint32 oldest); error OracleZeroCardinality(); error MarketFactoryExpiredPt(); error MarketFactoryInvalidPt(); error MarketFactoryMarketExists(); error MarketFactoryLnFeeRateRootTooHigh(uint80 lnFeeRateRoot, uint256 maxLnFeeRateRoot); error MarketFactoryReserveFeePercentTooHigh( uint8 reserveFeePercent, uint8 maxReserveFeePercent ); error MarketFactoryZeroTreasury(); error MarketFactoryInitialAnchorTooLow(int256 initialAnchor, int256 minInitialAnchor); // ROUTER error RouterInsufficientLpOut(uint256 actualLpOut, uint256 requiredLpOut); error RouterInsufficientSyOut(uint256 actualSyOut, uint256 requiredSyOut); error RouterInsufficientPtOut(uint256 actualPtOut, uint256 requiredPtOut); error RouterInsufficientYtOut(uint256 actualYtOut, uint256 requiredYtOut); error RouterInsufficientPYOut(uint256 actualPYOut, uint256 requiredPYOut); error RouterInsufficientTokenOut(uint256 actualTokenOut, uint256 requiredTokenOut); error RouterExceededLimitSyIn(uint256 actualSyIn, uint256 limitSyIn); error RouterExceededLimitPtIn(uint256 actualPtIn, uint256 limitPtIn); error RouterExceededLimitYtIn(uint256 actualYtIn, uint256 limitYtIn); error RouterInsufficientSyRepay(uint256 actualSyRepay, uint256 requiredSyRepay); error RouterInsufficientPtRepay(uint256 actualPtRepay, uint256 requiredPtRepay); error RouterNotAllSyUsed(uint256 netSyDesired, uint256 netSyUsed); error RouterTimeRangeZero(); error RouterCallbackNotPendleMarket(address caller); error RouterInvalidAction(bytes4 selector); error RouterInvalidFacet(address facet); error RouterKyberSwapDataZero(); // YIELD CONTRACT error YCExpired(); error YCNotExpired(); error YieldContractInsufficientSy(uint256 actualSy, uint256 requiredSy); error YCNothingToRedeem(); error YCPostExpiryDataNotSet(); error YCNoFloatingSy(); // YieldFactory error YCFactoryInvalidExpiry(); error YCFactoryYieldContractExisted(); error YCFactoryZeroExpiryDivisor(); error YCFactoryZeroTreasury(); error YCFactoryInterestFeeRateTooHigh(uint256 interestFeeRate, uint256 maxInterestFeeRate); error YCFactoryRewardFeeRateTooHigh(uint256 newRewardFeeRate, uint256 maxRewardFeeRate); // SY error SYInvalidTokenIn(address token); error SYInvalidTokenOut(address token); error SYZeroDeposit(); error SYZeroRedeem(); error SYInsufficientSharesOut(uint256 actualSharesOut, uint256 requiredSharesOut); error SYInsufficientTokenOut(uint256 actualTokenOut, uint256 requiredTokenOut); // SY-specific error SYQiTokenMintFailed(uint256 errCode); error SYQiTokenRedeemFailed(uint256 errCode); error SYQiTokenRedeemRewardsFailed(uint256 rewardAccruedType0, uint256 rewardAccruedType1); error SYQiTokenBorrowRateTooHigh(uint256 borrowRate, uint256 borrowRateMax); error SYCurveInvalidPid(); error SYCurve3crvPoolNotFound(); error SYApeDepositAmountTooSmall(uint256 amountDeposited); error SYBalancerInvalidPid(); error SYInvalidRewardToken(address token); error SYStargateRedeemCapExceeded(uint256 amountLpDesired, uint256 amountLpRedeemable); // Liquidity Mining error VCInactivePool(address pool); error VCPoolAlreadyActive(address pool); error VCZeroVePendle(address user); error VCExceededMaxWeight(uint256 totalWeight, uint256 maxWeight); error VCEpochNotFinalized(uint256 wTime); error VCPoolAlreadyAddAndRemoved(address pool); error VEInvalidNewExpiry(uint256 newExpiry); error VEExceededMaxLockTime(); error VEInsufficientLockTime(); error VENotAllowedReduceExpiry(); error VEZeroAmountLocked(); error VEPositionNotExpired(); error VEZeroPosition(); error VEZeroSlope(uint128 bias, uint128 slope); error VEReceiveOldSupply(uint256 msgTime); error GCNotPendleMarket(address caller); error GCNotVotingController(address caller); error InvalidWTime(uint256 wTime); error ExpiryInThePast(uint256 expiry); error ChainNotSupported(uint256 chainId); error FDTotalAmountFundedNotMatch(uint256 actualTotalAmount, uint256 expectedTotalAmount); error FDEpochLengthMismatch(); error FDInvalidPool(address pool); error FDPoolAlreadyExists(address pool); error FDInvalidNewFinishedEpoch(uint256 oldFinishedEpoch, uint256 newFinishedEpoch); error FDInvalidStartEpoch(uint256 startEpoch); error FDInvalidWTimeFund(uint256 lastFunded, uint256 wTime); error FDFutureFunding(uint256 lastFunded, uint256 currentWTime); error BDInvalidEpoch(uint256 epoch, uint256 startTime); // Cross-Chain error MsgNotFromSendEndpoint(uint16 srcChainId, bytes path); error MsgNotFromReceiveEndpoint(address sender); error InsufficientFeeToSendMsg(uint256 currentFee, uint256 requiredFee); error ApproxDstExecutionGasNotSet(); error InvalidRetryData(); // GENERIC MSG error ArrayLengthMismatch(); error ArrayEmpty(); error ArrayOutOfBounds(); error ZeroAddress(); error FailedToSendEther(); error OnlyLayerZeroEndpoint(); error OnlyYT(); error OnlyYCFactory(); error OnlyWhitelisted(); // Swap Aggregator error SAInsufficientTokenIn(address tokenIn, uint256 amountExpected, uint256 amountActual); error UnsupportedSelector(uint256 aggregatorType, bytes4 selector); }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity 0.8.17; /* solhint-disable private-vars-leading-underscore, reason-string */ library Math { uint256 internal constant ONE = 1e18; // 18 decimal places int256 internal constant IONE = 1e18; // 18 decimal places function subMax0(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return (a >= b ? a - b : 0); } } function subNoNeg(int256 a, int256 b) internal pure returns (int256) { require(a >= b, "negative"); return a - b; // no unchecked since if b is very negative, a - b might overflow } function mulDown(uint256 a, uint256 b) internal pure returns (uint256) { uint256 product = a * b; unchecked { return product / ONE; } } function mulDown(int256 a, int256 b) internal pure returns (int256) { int256 product = a * b; unchecked { return product / IONE; } } function divDown(uint256 a, uint256 b) internal pure returns (uint256) { uint256 aInflated = a * ONE; unchecked { return aInflated / b; } } function divDown(int256 a, int256 b) internal pure returns (int256) { int256 aInflated = a * IONE; unchecked { return aInflated / b; } } function rawDivUp(uint256 a, uint256 b) internal pure returns (uint256) { return (a + b - 1) / b; } // @author Uniswap function sqrt(uint256 y) internal pure returns (uint256 z) { if (y > 3) { z = y; uint256 x = y / 2 + 1; while (x < z) { z = x; x = (y / x + x) / 2; } } else if (y != 0) { z = 1; } } function abs(int256 x) internal pure returns (uint256) { return uint256(x > 0 ? x : -x); } function neg(int256 x) internal pure returns (int256) { return x * (-1); } function neg(uint256 x) internal pure returns (int256) { return Int(x) * (-1); } function max(uint256 x, uint256 y) internal pure returns (uint256) { return (x > y ? x : y); } function max(int256 x, int256 y) internal pure returns (int256) { return (x > y ? x : y); } function min(uint256 x, uint256 y) internal pure returns (uint256) { return (x < y ? x : y); } function min(int256 x, int256 y) internal pure returns (int256) { return (x < y ? x : y); } /*/////////////////////////////////////////////////////////////// SIGNED CASTS //////////////////////////////////////////////////////////////*/ function Int(uint256 x) internal pure returns (int256) { require(x <= uint256(type(int256).max)); return int256(x); } function Int128(int256 x) internal pure returns (int128) { require(type(int128).min <= x && x <= type(int128).max); return int128(x); } function Int128(uint256 x) internal pure returns (int128) { return Int128(Int(x)); } /*/////////////////////////////////////////////////////////////// UNSIGNED CASTS //////////////////////////////////////////////////////////////*/ function Uint(int256 x) internal pure returns (uint256) { require(x >= 0); return uint256(x); } function Uint32(uint256 x) internal pure returns (uint32) { require(x <= type(uint32).max); return uint32(x); } function Uint112(uint256 x) internal pure returns (uint112) { require(x <= type(uint112).max); return uint112(x); } function Uint96(uint256 x) internal pure returns (uint96) { require(x <= type(uint96).max); return uint96(x); } function Uint128(uint256 x) internal pure returns (uint128) { require(x <= type(uint128).max); return uint128(x); } function isAApproxB(uint256 a, uint256 b, uint256 eps) internal pure returns (bool) { return mulDown(b, ONE - eps) <= a && a <= mulDown(b, ONE + eps); } function isAGreaterApproxB(uint256 a, uint256 b, uint256 eps) internal pure returns (bool) { return a >= b && a <= mulDown(b, ONE + eps); } function isASmallerApproxB(uint256 a, uint256 b, uint256 eps) internal pure returns (bool) { return a <= b && a >= mulDown(b, ONE - eps); } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "../../interfaces/IWETH.sol"; abstract contract TokenHelper { using SafeERC20 for IERC20; address internal constant NATIVE = address(0); uint256 internal constant LOWER_BOUND_APPROVAL = type(uint96).max / 2; // some tokens use 96 bits for approval function _transferIn(address token, address from, uint256 amount) internal { if (token == NATIVE) require(msg.value == amount, "eth mismatch"); else if (amount != 0) IERC20(token).safeTransferFrom(from, address(this), amount); } function _transferFrom(IERC20 token, address from, address to, uint256 amount) internal { if (amount != 0) token.safeTransferFrom(from, to, amount); } function _transferOut(address token, address to, uint256 amount) internal { if (amount == 0) return; if (token == NATIVE) { (bool success, ) = to.call{ value: amount }(""); require(success, "eth send failed"); } else { IERC20(token).safeTransfer(to, amount); } } function _transferOut(address[] memory tokens, address to, uint256[] memory amounts) internal { uint256 numTokens = tokens.length; require(numTokens == amounts.length, "length mismatch"); for (uint256 i = 0; i < numTokens; ) { _transferOut(tokens[i], to, amounts[i]); unchecked { i++; } } } function _selfBalance(address token) internal view returns (uint256) { return (token == NATIVE) ? address(this).balance : IERC20(token).balanceOf(address(this)); } function _selfBalance(IERC20 token) internal view returns (uint256) { return token.balanceOf(address(this)); } /// @notice Approves the stipulated contract to spend the given allowance in the given token /// @dev PLS PAY ATTENTION to tokens that requires the approval to be set to 0 before changing it function _safeApprove(address token, address to, uint256 value) internal { (bool success, bytes memory data) = token.call( abi.encodeWithSelector(IERC20.approve.selector, to, value) ); require(success && (data.length == 0 || abi.decode(data, (bool))), "Safe Approve"); } function _safeApproveInf(address token, address to) internal { if (token == NATIVE) return; if (IERC20(token).allowance(address(this), to) < LOWER_BOUND_APPROVAL) { _safeApprove(token, to, 0); _safeApprove(token, to, type(uint256).max); } } function _wrap_unwrap_ETH(address tokenIn, address tokenOut, uint256 netTokenIn) internal { if (tokenIn == NATIVE) IWETH(tokenOut).deposit{ value: netTokenIn }(); else IWETH(tokenIn).withdraw(netTokenIn); } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; import "../../interfaces/IStandardizedYield.sol"; import "../erc20/PendleERC20Permit.sol"; import "../libraries/math/Math.sol"; import "../libraries/TokenHelper.sol"; import "../libraries/Errors.sol"; import "../libraries/BoringOwnableUpgradeable.sol"; import "@openzeppelin/contracts/security/Pausable.sol"; abstract contract SYBase is IStandardizedYield, PendleERC20Permit, TokenHelper, BoringOwnableUpgradeable, Pausable { using Math for uint256; address public immutable yieldToken; constructor( string memory _name, string memory _symbol, address _yieldToken ) PendleERC20Permit(_name, _symbol, IERC20Metadata(_yieldToken).decimals()) initializer { yieldToken = _yieldToken; __BoringOwnable_init(); } // solhint-disable no-empty-blocks receive() external payable {} /*/////////////////////////////////////////////////////////////// DEPOSIT/REDEEM USING BASE TOKENS //////////////////////////////////////////////////////////////*/ /** * @dev See {IStandardizedYield-deposit} */ function deposit( address receiver, address tokenIn, uint256 amountTokenToDeposit, uint256 minSharesOut ) external payable nonReentrant returns (uint256 amountSharesOut) { if (!isValidTokenIn(tokenIn)) revert Errors.SYInvalidTokenIn(tokenIn); if (amountTokenToDeposit == 0) revert Errors.SYZeroDeposit(); _transferIn(tokenIn, msg.sender, amountTokenToDeposit); amountSharesOut = _deposit(tokenIn, amountTokenToDeposit); if (amountSharesOut < minSharesOut) revert Errors.SYInsufficientSharesOut(amountSharesOut, minSharesOut); _mint(receiver, amountSharesOut); emit Deposit(msg.sender, receiver, tokenIn, amountTokenToDeposit, amountSharesOut); } /** * @dev See {IStandardizedYield-redeem} */ function redeem( address receiver, uint256 amountSharesToRedeem, address tokenOut, uint256 minTokenOut, bool burnFromInternalBalance ) external nonReentrant returns (uint256 amountTokenOut) { if (!isValidTokenOut(tokenOut)) revert Errors.SYInvalidTokenOut(tokenOut); if (amountSharesToRedeem == 0) revert Errors.SYZeroRedeem(); if (burnFromInternalBalance) { _burn(address(this), amountSharesToRedeem); } else { _burn(msg.sender, amountSharesToRedeem); } amountTokenOut = _redeem(receiver, tokenOut, amountSharesToRedeem); if (amountTokenOut < minTokenOut) revert Errors.SYInsufficientTokenOut(amountTokenOut, minTokenOut); emit Redeem(msg.sender, receiver, tokenOut, amountSharesToRedeem, amountTokenOut); } /** * @notice mint shares based on the deposited base tokens * @param tokenIn base token address used to mint shares * @param amountDeposited amount of base tokens deposited * @return amountSharesOut amount of shares minted */ function _deposit( address tokenIn, uint256 amountDeposited ) internal virtual returns (uint256 amountSharesOut); /** * @notice redeems base tokens based on amount of shares to be burned * @param tokenOut address of the base token to be redeemed * @param amountSharesToRedeem amount of shares to be burned * @return amountTokenOut amount of base tokens redeemed */ function _redeem( address receiver, address tokenOut, uint256 amountSharesToRedeem ) internal virtual returns (uint256 amountTokenOut); /*/////////////////////////////////////////////////////////////// EXCHANGE-RATE //////////////////////////////////////////////////////////////*/ /** * @dev See {IStandardizedYield-exchangeRate} */ function exchangeRate() external view virtual override returns (uint256 res); /*/////////////////////////////////////////////////////////////// REWARDS-RELATED //////////////////////////////////////////////////////////////*/ /** * @dev See {IStandardizedYield-claimRewards} */ function claimRewards( address /*user*/ ) external virtual override returns (uint256[] memory rewardAmounts) { rewardAmounts = new uint256[](0); } /** * @dev See {IStandardizedYield-getRewardTokens} */ function getRewardTokens() external view virtual override returns (address[] memory rewardTokens) { rewardTokens = new address[](0); } /** * @dev See {IStandardizedYield-accruedRewards} */ function accruedRewards( address /*user*/ ) external view virtual override returns (uint256[] memory rewardAmounts) { rewardAmounts = new uint256[](0); } function rewardIndexesCurrent() external virtual override returns (uint256[] memory indexes) { indexes = new uint256[](0); } function rewardIndexesStored() external view virtual override returns (uint256[] memory indexes) { indexes = new uint256[](0); } /*/////////////////////////////////////////////////////////////// MISC METADATA FUNCTIONS //////////////////////////////////////////////////////////////*/ function previewDeposit( address tokenIn, uint256 amountTokenToDeposit ) external view virtual returns (uint256 amountSharesOut) { if (!isValidTokenIn(tokenIn)) revert Errors.SYInvalidTokenIn(tokenIn); return _previewDeposit(tokenIn, amountTokenToDeposit); } function previewRedeem( address tokenOut, uint256 amountSharesToRedeem ) external view virtual returns (uint256 amountTokenOut) { if (!isValidTokenOut(tokenOut)) revert Errors.SYInvalidTokenOut(tokenOut); return _previewRedeem(tokenOut, amountSharesToRedeem); } function pause() external onlyOwner { _pause(); } function unpause() external onlyOwner { _unpause(); } function _beforeTokenTransfer( address, address, uint256 ) internal virtual override whenNotPaused {} function _previewDeposit( address tokenIn, uint256 amountTokenToDeposit ) internal view virtual returns (uint256 amountSharesOut); function _previewRedeem( address tokenOut, uint256 amountSharesToRedeem ) internal view virtual returns (uint256 amountTokenOut); function getTokensIn() public view virtual returns (address[] memory res); function getTokensOut() public view virtual returns (address[] memory res); function isValidTokenIn(address token) public view virtual returns (bool); function isValidTokenOut(address token) public view virtual returns (bool); }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity 0.8.17; interface IFrxEthMinter { function frxETHToken() external view returns (address); function sfrxETHToken() external view returns (address); function submitAndDeposit(address recipient) external payable returns (uint256 shares); }
// SPDX-License-Identifier: GPL-3.0-or-later /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.8.17; import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; interface IERC4626 is IERC20Metadata { function asset() external view returns (address); function deposit(uint256 assets, address receiver) external returns (uint256); function redeem(uint256 shares, address receiver, address owner) external returns (uint256); function convertToAssets(uint256 shares) external view returns (uint256); function previewDeposit(uint256 assets) external view returns (uint256); }
// SPDX-License-Identifier: GPL-3.0-or-later /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.8.17; import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; interface IStandardizedYield is IERC20Metadata { /// @dev Emitted when any base tokens is deposited to mint shares event Deposit( address indexed caller, address indexed receiver, address indexed tokenIn, uint256 amountDeposited, uint256 amountSyOut ); /// @dev Emitted when any shares are redeemed for base tokens event Redeem( address indexed caller, address indexed receiver, address indexed tokenOut, uint256 amountSyToRedeem, uint256 amountTokenOut ); /// @dev check `assetInfo()` for more information enum AssetType { TOKEN, LIQUIDITY } /// @dev Emitted when (`user`) claims their rewards event ClaimRewards(address indexed user, address[] rewardTokens, uint256[] rewardAmounts); /** * @notice mints an amount of shares by depositing a base token. * @param receiver shares recipient address * @param tokenIn address of the base tokens to mint shares * @param amountTokenToDeposit amount of base tokens to be transferred from (`msg.sender`) * @param minSharesOut reverts if amount of shares minted is lower than this * @return amountSharesOut amount of shares minted * @dev Emits a {Deposit} event * * Requirements: * - (`tokenIn`) must be a valid base token. */ function deposit( address receiver, address tokenIn, uint256 amountTokenToDeposit, uint256 minSharesOut ) external payable returns (uint256 amountSharesOut); /** * @notice redeems an amount of base tokens by burning some shares * @param receiver recipient address * @param amountSharesToRedeem amount of shares to be burned * @param tokenOut address of the base token to be redeemed * @param minTokenOut reverts if amount of base token redeemed is lower than this * @param burnFromInternalBalance if true, burns from balance of `address(this)`, otherwise burns from `msg.sender` * @return amountTokenOut amount of base tokens redeemed * @dev Emits a {Redeem} event * * Requirements: * - (`tokenOut`) must be a valid base token. */ function redeem( address receiver, uint256 amountSharesToRedeem, address tokenOut, uint256 minTokenOut, bool burnFromInternalBalance ) external returns (uint256 amountTokenOut); /** * @notice exchangeRate * syBalance / 1e18 must return the asset balance of the account * @notice vice-versa, if a user uses some amount of tokens equivalent to X asset, the amount of sy he can mint must be X * exchangeRate / 1e18 * @dev SYUtils's assetToSy & syToAsset should be used instead of raw multiplication & division */ function exchangeRate() external view returns (uint256 res); /** * @notice claims reward for (`user`) * @param user the user receiving their rewards * @return rewardAmounts an array of reward amounts in the same order as `getRewardTokens` * @dev * Emits a `ClaimRewards` event * See {getRewardTokens} for list of reward tokens */ function claimRewards(address user) external returns (uint256[] memory rewardAmounts); /** * @notice get the amount of unclaimed rewards for (`user`) * @param user the user to check for * @return rewardAmounts an array of reward amounts in the same order as `getRewardTokens` */ function accruedRewards(address user) external view returns (uint256[] memory rewardAmounts); function rewardIndexesCurrent() external returns (uint256[] memory indexes); function rewardIndexesStored() external view returns (uint256[] memory indexes); /** * @notice returns the list of reward token addresses */ function getRewardTokens() external view returns (address[] memory); /** * @notice returns the address of the underlying yield token */ function yieldToken() external view returns (address); /** * @notice returns all tokens that can mint this SY */ function getTokensIn() external view returns (address[] memory res); /** * @notice returns all tokens that can be redeemed by this SY */ function getTokensOut() external view returns (address[] memory res); function isValidTokenIn(address token) external view returns (bool); function isValidTokenOut(address token) external view returns (bool); function previewDeposit( address tokenIn, uint256 amountTokenToDeposit ) external view returns (uint256 amountSharesOut); function previewRedeem( address tokenOut, uint256 amountSharesToRedeem ) external view returns (uint256 amountTokenOut); /** * @notice This function contains information to interpret what the asset is * @return assetType the type of the asset (0 for ERC20 tokens, 1 for AMM liquidity tokens) * @return assetAddress the address of the asset * @return assetDecimals the decimals of the asset */ function assetInfo() external view returns (AssetType assetType, address assetAddress, uint8 assetDecimals); }
// SPDX-License-Identifier: GPL-3.0-or-later /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.8.17; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IWETH is IERC20 { event Deposit(address indexed dst, uint256 wad); event Withdrawal(address indexed src, uint256 wad); function deposit() external payable; function withdraw(uint256 wad) external; }
{ "optimizer": { "enabled": true, "runs": 1000000 }, "viaIR": true, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"address","name":"_minter","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"actualSharesOut","type":"uint256"},{"internalType":"uint256","name":"requiredSharesOut","type":"uint256"}],"name":"SYInsufficientSharesOut","type":"error"},{"inputs":[{"internalType":"uint256","name":"actualTokenOut","type":"uint256"},{"internalType":"uint256","name":"requiredTokenOut","type":"uint256"}],"name":"SYInsufficientTokenOut","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SYInvalidTokenIn","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SYInvalidTokenOut","type":"error"},{"inputs":[],"name":"SYZeroDeposit","type":"error"},{"inputs":[],"name":"SYZeroRedeem","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"address[]","name":"rewardTokens","type":"address[]"},{"indexed":false,"internalType":"uint256[]","name":"rewardAmounts","type":"uint256[]"}],"name":"ClaimRewards","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":true,"internalType":"address","name":"receiver","type":"address"},{"indexed":true,"internalType":"address","name":"tokenIn","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountDeposited","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountSyOut","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":true,"internalType":"address","name":"receiver","type":"address"},{"indexed":true,"internalType":"address","name":"tokenOut","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountSyToRedeem","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountTokenOut","type":"uint256"}],"name":"Redeem","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"accruedRewards","outputs":[{"internalType":"uint256[]","name":"rewardAmounts","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"assetInfo","outputs":[{"internalType":"enum IStandardizedYield.AssetType","name":"assetType","type":"uint8"},{"internalType":"address","name":"assetAddress","type":"address"},{"internalType":"uint8","name":"assetDecimals","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"claimRewards","outputs":[{"internalType":"uint256[]","name":"rewardAmounts","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountTokenToDeposit","type":"uint256"},{"internalType":"uint256","name":"minSharesOut","type":"uint256"}],"name":"deposit","outputs":[{"internalType":"uint256","name":"amountSharesOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"exchangeRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"frxETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRewardTokens","outputs":[{"internalType":"address[]","name":"rewardTokens","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTokensIn","outputs":[{"internalType":"address[]","name":"res","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTokensOut","outputs":[{"internalType":"address[]","name":"res","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"isValidTokenIn","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"isValidTokenOut","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountTokenToDeposit","type":"uint256"}],"name":"previewDeposit","outputs":[{"internalType":"uint256","name":"amountSharesOut","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint256","name":"amountSharesToRedeem","type":"uint256"}],"name":"previewRedeem","outputs":[{"internalType":"uint256","name":"amountTokenOut","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"amountSharesToRedeem","type":"uint256"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint256","name":"minTokenOut","type":"uint256"},{"internalType":"bool","name":"burnFromInternalBalance","type":"bool"}],"name":"redeem","outputs":[{"internalType":"uint256","name":"amountTokenOut","type":"uint256"}],"stateMutability":"nonpayab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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000bafa44efe7901e04e39dad13167d089c559c1138000000000000000000000000000000000000000000000000000000000000000a5359207366727845544800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a53592d7366727845544800000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _name (string): SY sfrxETH
Arg [1] : _symbol (string): SY-sfrxETH
Arg [2] : _minter (address): 0xbAFA44EFE7901E04E39Dad13167D089C559c1138
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 000000000000000000000000bafa44efe7901e04e39dad13167d089c559c1138
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [4] : 5359207366727845544800000000000000000000000000000000000000000000
Arg [5] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [6] : 53592d7366727845544800000000000000000000000000000000000000000000
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